If you cut the ripple, you're letting someone know that you're onboard with what they are saying. They tingle your brainwaves, you ride their waves. Your frequencies are alligned, and cut at the same time.
Imagine this, you're sat with a friend in the rain, having a couple of cans. Your friend starts talking about how much he loves the feeling of warm sand on the bottom of his feet. If you know the feeling, you let him know "I cut the ripple".
Yeah man, I cut the ripple, I'm totally with you on that one.
A state of either being positively of negatively overwhelmed by having taken two lines of two different drugs, too many times.
"Sorry I didn't make it to your birthday mate, I crossaligned after snorting too much ket and coke. Last thing I remember was that I was marrying an alpaca, but she was pretty cute. Then I killed her."
"Mate, you crossed a line."